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From "Xiaoyu Yao (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-10475) Adding metrics and warn/debug logs for long FSD lock
Date Wed, 01 Jun 2016 18:38:59 GMT
Xiaoyu Yao created HDFS-10475:
---------------------------------

             Summary: Adding metrics and warn/debug logs for long FSD lock
                 Key: HDFS-10475
                 URL: https://issues.apache.org/jira/browse/HDFS-10475
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: namenode
            Reporter: Xiaoyu Yao
            Assignee: Xiaoyu Yao


This is a follow up of the comment on HADOOP-12916 and [here|https://issues.apache.org/jira/browse/HDFS-9924?focusedCommentId=15310837&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15310837]
add more metrics and WARN/DEBUG logs for long FSD/FSN locking operations on namenode similar
to what we have for slow write/network WARN/metrics on datanode.



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